Improvement in machines for tapering bars for reaping and mowing machines



s. OSBORN.

MACHINES FQR TAPERING BARS FOR REAPIN'G AND MOWING MACHINES.

N0.178,3Z3. Pate nted. June 6,1876.

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[UNITED STATES PATENT CFFICE,

SAMUEL OSBORN, OF SHEFFIELD, ENGLAND.

IMPROVEMENT IN MACHINES FOR TAPERING BARS FOR REAPING AND MOWING MACHINES.

Specification forming part of Letters Patent No. 178,323, dated J une 6, 1876 5 application filed September 15, 1875.

To all whom it may concern:

Be it known that I, SAMUEL OSBORN, of Sheffield, in the county of York, England, have invented an Improvement in Manufacturing Tapering Bars for Mowing and Reaping Machines, of which the following is aspecitication:

The finger-beams of mowing and reaping machines are usually tapering, so as to obtain the necessary strength at the hilt without being unnecessarily heavy toward the point. This has usually been accomplished by a trip-ham1ner; but the work is more or less irregular, so that it requires considerable finishing by hand, and extra work in fitting the fingers upon the bar. In other cases the tapering bar has been made from a plate or bar of sufficient width to be slit up longitudinally and slightly diagonally to form two bars.

My present improvements provide for the finger-beams being rolled in a tapering form, and with great accuracy.

I employ a grooved bar or templet, with the groove of a width to freely receive the out tor-bar edgewise, and the bottom of the groove is inclined to the under side of the bar at the same angle as one edge of the finger-beam is to the other, and the bar to form the fingerbeam is introduced into this grooved templet and rolled between rollers ed gewise, and gradually reduced in width and elongated until the required length and taper are obtained, the said finger-beam being rolled flatwise from time to time to preserve uniformity in thickness.

In the drawing, Figure 1 represents the templet sectionally, with the bar partially introduced into it. Fig. 2 is an elevation of the finger-beam. Fig. 3 is an end view of the templet, and Fig. 4 is an elevation of rollers adapted to rolling such tapering fingerbeam. H

The templet a is made of a metal bar, preferably steel, and square or oblong sectionally, and of SllffiOlE-lli} size and length to receive in its upper surface a groove of a width slightly greater than the thickness of the finger-beam, and of a depth corresponding to the width thereof, the same being deeper at one end than at the other, so as to correspond to the taper of the finger-beam. The bar of metal 6, from which the finger-beam is made, is of a width corresponding to. the widest end of the finger-beam, and the same is introduced into the deepest end of the groove, and passed with the templet through a suitable pair of rollers. The rollers b b are represented as adapted to that purpose, and the finger-beam bar is pushed farther along toward the shallowcst end of the groove after each reduction.

It is necessary to roll the bar flatwise to maintain uniformity in thickness. This may be done between each edgewise rolling.

As a convenient way of constructing the rollers I) for doing the said work, the opening at 0 may be of a width to admit freely the templet, and roll the bar edgewise, and the width at 61 may correspond to the thickness of the finger-beam, so as to roll the same flatwise.

The templet should be constructed so that when the finger-beam has been extended by rolling it with a taper, as aforesaid, and reaches either the end of the templet or a given point thereon, it will be finished and ready for use.

By this improvement the tapering fingerbeam will be made true and uniform, and the grooved bar forming the templet can be handled by the workmen with great facility, especially where tables or rollers are provided for supporting the same on both sides of the rollers d.

A handle, 9, should be applied to the templet for moving the same.

I do not claim a tapering die or swage in which articles of metal are rolled, as seen in the English Patent No. 643, of 1856.

I claim as my invention- The combination of the flattening-rolls, the edging-rolls, and the grooved templet, substantially as described.

Signed by me this 10th day of September, A. D. 1875.

SAMUEL OSBORN.

Witnesses:

Gno. I). WALKER, GIrAs. H. SMITH. 

